The notion of "cool" in general I think is completely subjective and volatile. I pay little if any attention to any perception of coolness that some people might believe they project, or that some people might believe some other people project. I rather pay attention to what people actually say, and how they write, how clearly they express themselves, how they share their common sense, how interesting their thoughts might be, or their comments, arguments, and jokes.

Paying attention to a "cool" factor instead of substance of what is written/said for me would be similar to prioritizing the "brand" of a monitor instead of its actual picture quality.

1. No posting what everyone already knows, try to find some other way to get around it or something original.
2. Listen to stuff before talking about it.
3. be helpful with every post
4. no trashing or fanboyisms,
5. Don't start threads often..
6. Become a contributing member